Ascent Design Group
Boston, MAAligning Infrastructure with Communities
Service detail: Transportation Infrastructure Design
Public engineering firm directory
Search engineering firm profiles built for buyers who need a shortlist, not a sales pitch.
35 results
Showing 1-24 of 35
Aligning Infrastructure with Communities
Service detail: Transportation Infrastructure Design

Excel. Together.
Project: Bloomingdale Road Reconstruction

Shaping Our Communities Together
Service detail: Planning
Bloom Companies, LLC is an engineering, architecture, and construction management practice founded in 1998 in Milwaukee, Wisconsin. Established by Mathew Tharaniyil, the organization initially focused on bridge and structural engineering, eventually expanding to cover transportation, architecture, electrical and controls, and design-build delivery. It has grown through key acquisitions, including Hay Dobbs in 2024 and Jendusa Design Build in 2025, and serves academic, municipal, transportation, industrial, and utility clients across multiple US offices and international locations.
Project: Historic West Kilbourn Avenue Bascule Bridge Rehabilitation
Your infrastructure challenges. Solved.
Service detail: Engineering

Partners in Reliability, Resilience, Innovation, Sustainability, and Safety
Project: Pittsburgh International Airport Terminal Modernization Program
Civil, structural, and surveying engineering solutions for public infrastructure and private developments
Project: Quincy Approach Spans (Fore River Bridge)
CDM Smith is an engineering, construction, and environmental consulting firm headquartered in Boston, Massachusetts, with over 7,000 colleagues and 120+ offices worldwide. With 79 years of impact (founded circa 1947 as Camp, Dresser & McKee), it delivers engineering, construction, and environmental services spanning water and wastewater infrastructure, environmental remediation, transportation, energy, and federal and commercial facilities. CDM Smith's practices include drinking water, conveyance, wastewater, stormwater, environmental emerging contaminants, geotechnical and tunnels, MEP and fire protection, architecture, automation, transportation, energy, and climate resilience. It operates Trinnex, a wholly-owned software subsidiary offering the dataCAST SaaS platform and advanced analytics for environmental and infrastructure data management.
Project: PFAS Data to Decisions - U.S. Air Force (Dover AFB)

Consulting Engineering and Land Surveying
Project: Barre Common Traffic Improvements

Crossman Engineering is a consulting engineering and land surveying practice established in 1984. Its New England team supports municipal engineering, transportation, land development, environmental engineering, site planning, permitting, surveying, and landscape architecture from Rhode Island and Massachusetts offices.
Service detail: Municipal and Site Engineering

Client-Focused Parking Solutions
Project: Ft. Duquesne and Sixth Parking Garage Facade and Renovation

DuBois & King is a multidisciplinary professional consulting practice providing planning, engineering, survey, permitting, and environmental services since 1962. Its technical disciplines span civil, structural, environmental, mechanical, and electrical engineering, surveying, and landscape architecture. D&K serves federal and state agencies, municipalities, healthcare and education facilities, industrial and commercial buildings, housing developments, and energy sector clients. Operating as a 100 percent entity, it focuses on delivering collaborative, sustainable, and resilient solutions for municipal and regional infrastructure across New England, New York, and the Southwest.
Project: Glencliff Micro-Hydro
Ingenuity That Shapes Lives
Service detail: Transportation
Ingenuity That Shapes Lives
Project: O'Hare International Airport Terminal 5 Expansion

Caring people. Quality work.
Project: 1918 Eighth Avenue Shoring Design
Gill Engineering Associates, Inc. is a Newton, Massachusetts-based engineering firm specializing in bridge design, inspection, and rehabilitation. Its services span accelerated bridge construction, bridge replacement and rehabilitation, bicycle and pedestrian facility design, bridge inspections and load ratings, and general municipal infrastructure projects.

Trusted Experts | Innovative Results
Project: Maplewood Avenue Bridge Rehabilitation
Advanced Infrastructure Inspection for Data-Driven Decisions
Service detail: Bridge Deck Scanning
JSP Land Development is a Westfield, Massachusetts firm providing turnkey land development consulting services for small-scale commercial sites, with deep expertise in the retail petroleum sector. Core engineering services include site design, traffic engineering, permitting and expediting, and construction management for gas stations, convenience stores, drive-thru restaurants, car washes, and small retail sites across New England and New York.
Service detail: Traffic Engineering

Transforming how communities move
Project: Lancaster County Freight Infrastructure Prioritization
LiRo-Hill is an award-winning integrated construction, design, environmental, and technology solutions firm headquartered in Syosset, New York. Founded in 1984, it has grown to 1,100+ team members across 13+ offices throughout the Northeast - New York, New Jersey, Pennsylvania, Massachusetts, and Connecticut. LiRo-Hill serves public and private sector clients ranging from villages and developers to major state agencies, delivering construction management, program management, architectural and engineering design, environmental services, and technology solutions. Ranked ENR Top 50 Construction Management Firms #5 and Top CM/PM-for-Fee #14 in 2025, and ranked among Crain's New York Business Largest Engineering Firms at #12.
Service detail: Construction Management

Building Better Communities With You
Project: Kennedy Street Green Infrastructure

Taking Your Project to New Heights
Project: HNL Runway 8L Widening, Phase 2
Engineers. Scientists. Planners.
Project: East Providence High School